Global Patent Index - EP 0296621 A1

EP 0296621 A1 19881228 - Process for producing hard materials from combustion ash of fluidized bed.

Title (en)

Process for producing hard materials from combustion ash of fluidized bed.

Title (de)

Verfahren zur Herstellung von harten Materialien aus Wirbelschichtasche.

Title (fr)

Procédé pour la fabrication de matériaux durs à partir de cendres de combustion en lit fluidisé.

Publication

EP 0296621 A1 19881228 (EN)

Application

EP 88110127 A 19880624

Priority

JP 15898187 A 19870625

Abstract (en)

The present invention relates to processes for producing a material usable as a suitable civil engineering and construction material by treating a combustion ash formed by the combustion of a fluidized bed comprising a coal as the fuel and limestone as a desulfurizing agent. In this process, quick lime contained therein is sufficiently slaked at first by addition of water and heat thus generated is released to prevent disintegration of the product, and then the product is subjected to atmospheric pressure steam treatment to obtain the product of a high strength in a short time.

IPC 1-7

C04B 18/06; C04B 18/02

IPC 8 full level

B09B 3/00 (2006.01); C04B 7/26 (2006.01); C04B 7/28 (2006.01); C04B 18/02 (2006.01); C04B 18/06 (2006.01); C04B 18/10 (2006.01); C04B 28/06 (2006.01); C04B 28/22 (2006.01)

CPC (source: EP US)

C04B 18/021 (2013.01 - EP US); C04B 18/061 (2013.01 - EP US); C04B 28/065 (2013.01 - EP US); C04B 28/18 (2013.01 - EP US); Y02W 30/91 (2015.05 - EP US); Y10S 106/01 (2013.01 - EP US)

Citation (search report)

  • [X] EP 0022318 A1 19810114 - MINNICK L JOHN
  • [Y] FR 1427482 A 19660204
  • [A] US 1477276 A 19231211 - PAUL MCINTYRE FRANK
  • [Y] CHEMICAL ABSTRACTS, vol. 105, no. 14, October 1986, abstract no. 119739z, Columbus, Ohio, US; & JP-A-61 86 460 (KAWASAKI HEAVY INDUSTRIES, LT) 01-05-1986
  • [A] CHEMICAL ABSTRACTS, vol. 105, no. 12, September 1986, abstract no. 101804g, Columbus, Ohio, US; & JP-A-61 86 459 (KAWASAKI HEAVY INDUSTRIES, LTD) 01-05-1986

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0296621 A1 19881228; FI 883068 A0 19880627; FI 883068 A 19881226; FI 95793 B 19951215; FI 95793 C 19960325; JP H0419180 B2 19920330; JP S643038 A 19890106; US 5100473 A 19920331

DOCDB simple family (application)

EP 88110127 A 19880624; FI 883068 A 19880627; JP 15898187 A 19870625; US 21083788 A 19880624